Malunga neemveliso zokubumba sineentlobo ezimbini zeemveliso, eziziikheyibhili ezicutha ubushushu kunye nokuqhawuka kwentambo yobushushu. Umnqwazi wentambo yokucutha ubushushu ibunjwe nge-polyolefin kwaye inokumelana ne-UV kunye ne-abrasion. I-adhesive ye-melt eshushu ifakwe kwi-spiral shape ngaphakathi kwi-tube, inika ukhuseleko oluthembekileyo lokungena kwamanzi kunye nokukhusela umphezulu osikiweyo weentambo okanye iintambo ezizaliswe ngumoya. Ukuqhawuka kobushushu, okwenziwe ngezinto ezinyibilikayo ezishushu kunye ne-polyolefin edityaniswe ngomnqamlezo, kwaye inomsebenzi ogqwesileyo wokutywina, ukhuseleko lusetyenziswa ikakhulu kwi-insulation kunye nokutywinwa kwisebe lentambo yamandla ombane ombane ophantsi.